A small city requires about 15MWof power. Suppose that instead of using high-voltage lines to supply the power, the power is delivered at 120V.
Part A: Assuming a two-wire line of 0.62-cm-diameter copper wire, estimate the cost of the energy lost to heat per hour per meter. Assume the cost of electricity is about 12 cents per kWh. The resistivity of copper is 1.68×10-8Ω⋅m.